0.3分之x-1减去1.2=0.5分之x+2的解是多少

2024-12-26 14:12:45
推荐回答(4个)
回答1:

6.4
具体的解题过程是:(x-1)/0.3 - 1.2 = (x+2)/0.5
(5x-5)/1.5 - (3x+6)/1.5 = 1.2
5x-5-3x-6 = 1.5*1.2
2x-11 = 1.8
x = (1.8+11)/2 = 6.4

回答2:

0.3分之x-1减去1.2=0.5分之x+2
10(x-1)/3-1.2=2(x+2)
10(x-1)=(2x+5.2)×3
10x-10=6x+15.6
10x-6x=15.6+10
4x=25.6
x=6.4

回答3:

0.3分之x-1减去1.2=0.5分之x+2
3分之10x-10减去1.2=5分之10x+20
5(10x-10)-18=3(10x+20)
50x-50-18=30x+60
20x=128
x=6.4

回答4:

6.4